Bumped the OldMusicBox.ePUAP.Client to 1.25.3.
For some unknown reason that doesn't seem to be announced, the TpSiging5::GetSignedDocument changed the format of natural person's data (givenname, surname, personal identification number).
From the very beginning of the old TpSigning service, the document contained user signatures in the PodpisZP node. Later on, when TpSigning5 was introduced, they changed the signature to EPSignature node (different node with different model).
And guess what, starting from somewhere between 07-03-2025 and 10-03-2025, the new service (TpSigning5) returns the natural person's data in the old format (back to PodpisZP). Be aware of this and update your code accordingly.